Instruction Manual

<Toc> <Ind> <4. Ladder Communication >
4-1
IM 77J04J11-01E 1st Edition : 2006.08.25-00
4. Ladder Communication
4.1 Overview
The use of Ladder communication enables the M Series to communicate with a
sequencer (PLC). By specifying the register numbers of D registers of the M Series
as parameters in the ladder program, you can read/write data from/into the registers
using BCD codes (0 to 9).
Ladder communication module
PLC
A maximum of 1200 m; up to 31 slave stations
Figure 4-1 Example of Connection for Ladder Communication
● Connecting the M Series to a PLC of another company
When the M Series are connected to a PLC manufactured by Mitsubishi Electric (MELSEC-
A series), you can use the no-handshaking mode of the computer link unit.